Pith Number

pith:CKNUQLDP

pith:2022:CKNUQLDPXCQ7G4QO6PR2BKNDQC

not attested not anchored not stored refs pending

A Hoare Logic with Regular Behavioral Specifications

Alexander Knapp, Gidon Ernst, Toby Murray

arxiv:2205.06584 v1 · 2022-05-13 · cs.LO · cs.FL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CKNUQLDPXCQ7G4QO6PR2BKNDQC}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T04:22:59.906873Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

129b482c6fb8a1f3720ef3e3a0a9a3808a4fec5bfddb61d4faf7acea437063d7

Aliases

arxiv: 2205.06584 · arxiv_version: 2205.06584v1 · doi: 10.48550/arxiv.2205.06584 · pith_short_12: CKNUQLDPXCQ7 · pith_short_16: CKNUQLDPXCQ7G4QO · pith_short_8: CKNUQLDP

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/CKNUQLDPXCQ7G4QO6PR2BKNDQC \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 129b482c6fb8a1f3720ef3e3a0a9a3808a4fec5bfddb61d4faf7acea437063d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1921e02a17b07d6544c4822630dd54ad060f72c97b59aeb9886c926447a6d897",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2022-05-13T12:16:22Z",
    "title_canon_sha256": "5190d07eb79c97a7017dfd2938965d23f13a2e0cdb0b11f5ad88a6f1c632eadf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2205.06584",
    "kind": "arxiv",
    "version": 1
  }
}